Yet another Blitz Supercharger Install

[TOLMACH]

Question pls re wiring .. (I know I am very slow)

My question deals with clutch activation

1. I am right in thinking that blue wire on the diagram is simply supplying +12V signal to the relay (this wire goes from the 4-position module which manages the whole activatio thing)?

2. and that If I wire this unit only (wihtout connecting the fuel controller and 4-position module ) and supply +12 v to the blue wire I will be able to check whether clutch is engaging (just wanted to check the sc unit itself prior to installation as my kit is a pre-owned one)

Thank you

P.